Machine for attaching string fasteners to envelopes



S. B. URBANOWITZ MACHINE FOR ATTACHING STRING FASTENERS TO ENVELOPES Oct. 20, l925- Filed April 14, 1922 8 Sheets-Sheet l T Y www5 T A Nw .R @Af/0m mm N u k MACHINE FOR ATTACHING STRING FASTENERS TO ENVELOPES B" MKM/m A T TURNE Y Oct. 20, 1925. 1,558,065

S. B. URBANOWITZ MACHINE EUR ATTACHING STRING FASTENERS TO ENVELOPES Filed April l4 1922 8 Sheets-Sheet 3 9 2f E@ faz? im l /N VENTOR STA/VL .EY URBA/vo w/rz Mmm@ A ToR/VEY Oat.v 20, 1925. 1,558,065

S. B. URBANOWITZ HACHINE FOR ATTACHING STRING FASTENERS TO ENVELOPES Filed April 14,' 1922 8 Sheets-Sheet 4 Oct. 2o, 1925. 1.558,065

S. B. URBANOWITZ MACHINE FOR ATTACHING STRIG FASTENERS TO BNVELOY-ES Filed April 14. l1922 8 sheets-Sheet 5 .BH/Mmmm A TTORNEY Oct. 20, 1925- 1,558,065

s. B. uRBANowl'rz MACHINE FOR ATTAGHING STRING FASTENERS TO ENVELOPES Filed April 14. 1922 8 Sheetssheet 6 Byfm S. B. URBANOWITZ IACHINE FOR ATTACHING STRING FASTENERS TO EHVELOPES Filed 4, 1 8 Sheets-Sheet 7 By @a A TTORNE Y Oct 20b s. B. URBANOWITZ MACHINE FOR ATTACHING STRING FSTENERS TO ENVELOPES Filed April 14, 1922- 8 Sheets-Sheet 8 HV1/ENTOR- A TTORNE Y Patented Oct. 20, 1925.

UNITED "STAIRS saveur (ii-rice STANLEY B. Uri-Bannieres, on enrol-iso, rimiiivors, Assis-Nen l'ro transtec/Qu nnvnrlrn COMPANY, OF CHICAGO. ILLINQIS, A

CLCRATIUN 0I? ILLINOIS.

MACHINE FOR ATTAC/HING- STRING FSTENF-RSTO ENVELOPES.

Application filed April 14, 1922. Serial No. 552,657.

To all ywhom it may concern.'

Re it lmoivn that. I. STANLEY B. UnnaNowrrz, a citizen of the United States., residing at Chicago, in the county of Cool: and State of Illinois, have invented a neiv and useful Improvement in Machines for Attaching String Fasteners to Envelopes, of which the following' is a specification.

My invention relates to an improved machine for attaching string 4fasteners to envelopes of the class in which a string' is secured either to the body or flap of an envelope and provided with receiving devices such as a disk or Washer on the other portion of the envelope. My invention relates to providingan improved means for feeding the string to and through vthe disk or Washer forming a part of the means for fastening the string to one part of the envelope as distinguished from machines which feed the stru to or around the eyelet commonly employedl as a part `of the string securing means. By my invention l provide a member movable between the punch and die used to set the eyelet and away from said position after feeding the string to permit the punch and die to operate. The movable member referred to, Which preferably is in the form of an oscillatory arm, carries devices adjacent the string` delivery end of the movable n'ien'iber for positively feeding the string from the movable member and through a perforation in the strip of material from which the retaining Washer or disk is subsequently punched, after which the end of the string projecting through said perforation is engaged by a gripper for holding the end of the string in the perforation While the movable member begins its movement away from the path of the punch and die used to set the eyelet. The gripper retains the end of the string but momentarily Vand then simultaneously with a delay in the movement of the movable member away from the punch and die, the gripper opens to permit the punch to engage the string in the perforation, to force an eyelet through the perforation clamping the string betweenfthe eyelet and the yWasher blank and punch the Washer from `the Washer strip after which the punch carries the Washer and eyelet and the engaged .end of the string to the envelope and forces the eyelet through the envelope and preferably through a reinforcing Washer or disk on thel other side of the envelope against the die cooperating With the punch to set the eyelet 4and fasten the Washers and string securely tothe envelope. The movable `member preferably carries a pivoted delivery device or nozzle Which, at the end'of'the motion ot said member to its string delivering positions is turned by the latter part of said motion to enter the die cooperating` with the punch to cut the eyelet Washer' from the Washer strip, to thus present the end of the string` directly to the perforation in the washer strip before the feedingof the string begun. This insures positive opera-tion of the mechanisn'i and the positive directing of the string to a position to be engaged by the gripper. .By my invention I also prdvidc operating mechanism to properlytime the movement of the several `parts referred to and I provide devices to cooperate in the handling of the eyelets and Washers as will best be understood by reference to the detailed descriptionbelow of themaehine. I prefer to provide in my machine complete perforating and punching mechanism for not only attaching the string and string retaining Washer and eyelet to the envelope as described but also at the same time to secure to the other portion of the. envelope by means of an eyelet. a similarly formed Washer to receive the loose end ot the string When it is desired to close the envelope by means of the string. After the string` is securely engaged by the eyeletr and washer, the movable member is moved to the end of its back travel to provide the desired length of string from the eyelet and Washer and then' suitable cutting ydevices are operated to clip the string adjacent the delivery end of the movable member leaving the movablemember in readiness to be moved forwardly to provide the next. envelope with a string. In my machine I prefer to operate all of the mechanism from a single operating shaft7 independent cam mechanism being provided 4for actu,- ating each of the devices cooperating in handling the' string and other parts,` Which operating shaft is preferably clutch controlled so that the operator by releasing the clutch permits the operating shaft to make one rotation Which moves all of the mechanism through the complete cycle of its operation.

My invention will best be understood by reference to the accompanying drawings showing a preferred embodiment thereof in which- Fig. 1 shows my machine in front elevation, parts of the machine being shown in section to more clearly illustrate the relation of the parts, with the movable inember in its string feeding position,

Fig. 2 shows my complete machine in plan view with the movable member in the same position as in Fig. 1, parts of the ma` chine being shown in section to better illusu trate the relation of the parts,

Fig. 3 is a sectional view of the parts shown in Figs. 1 and 2 to an enlarged scale along the line 5 3 in Fig. 2 which shows the movable member, the string feeding devices and the parts used to operate the movable member,

Fig. 4 is a sectional view of the parts shown in Fig. 2 to an enlarged scale taken along the line 4 4, and shows the string gripper and the cam mechanism employed to operate it,

Fig. 5 is a sectional view of the parts shown in Fig. 2 to an enlarged scale taken along the line 5 5, and shows the actuating mechanism for the string feeding devices,

Fig. 6 is a sectional view to an enlarged scale taken along the line G-G in Fig. 2, and shows the cutting mechanism and its operating devices for cutting the string attached to the envelope,

Fig. 7 is a sectional view of the cani mechanism shown in Fig. 4 taken along the line 7-7,

Fig. S is a rear elevation of the parts shown in Fig. 6, taken parallel with the plane of the cutting devices to clearly show their construction and operation,

Fig. 9 shows in a view similar to Fig. 2 to an enlarged scale the string feeding devices in their string feeding position. and the relation of the same to the punching and eyelet setting mechanism,

Fig. 10 shows in a view similar to Fig. 1 to an enlarged scale the string feeding devices in their string feeding position. and their relation to the punching and eyelet setting mechanism, this view being taken along the line 10-10 in Fig. 2,

Fig. 11 is a sectional view to an enlarged scale of the punching and eyele-t. setting mechanism used in connection with the eyelet and washer used to secure the string to the envelope, this view being taken in the plane indicated by the right hand portion of the broken line 10-10 in Fig. 2,

Fig. 12 is a top view of part of the mechanism shown in Fig. 11,

Fig. 13 is a side elevation of the string delivery device,

Fig. 14 is a sectional view of the parts shown in Fig. 13 taken along the line 14--14, and

Fig. 15 is .a detail view of the lower end of the eyelet guide employed to feed the eyelets to the mechanism shown in Figs. 11 and 12.

Similar numerals refer to similar parts throughout the several views.

.is shown in Figs. 1 and 2 my machine consists of a base 20 on which an operating shaft 21 is mounted in suitable bearings to extend throughout the length of the machine and on this shaft a driving wheel 22 is mounted for free rotation excepting only when the clutch mechanism 23 is operated by the treadlc 24 through the communicating devices 25. at which time the driving wheel is connected to the shaft 21 and movesl the same through one rotation at the end of which the clutch mechanism 23 disengages the driving wheel and stops the operation of the main shaft7 assuming thatI the treadle 2st is released by the operator immediately after the operation of the same. The shaft 21 is provided with a hand wheel 2G for rotating the shaft manually in setting` up the machine.

The base 20 carries on its left hand p0rtion punches 27 and 28 as seen in Fig. 2. below each of which a perforating` punch is located as indicated at. 29 in Fig. 1, for the punch 27. the punch 29 serving to perforate the corresponding washer strip below the punch 27 after which the washer strip is fed upwardly as will be described in line with the punch 27 which cuts the washer from the strip and at the saine time engages an eyclet and secures the washer to the body portion of the envelope, the eyelets being fed into line with the punch 27 by the eyelet `guide 30. The punch 28 and its perforating punch similarly operate on a second washer strip with the exception that the punch 28 does not carry eyelets, but serves merely as a setting` punch for the eyelets supplied to the flaps of the envelopes by the punching mechanism on the other side of the machine. The punches 27 and 28 have secured to them. operating heads 31 and 32 which also engage the corresponding perforating punches referred to and these heads are connected together by a rod 38 engaged by a link 34 pivotally connected with the crank 35 carried by a shaft 3G mounted in a suitable bearing on the base 20. The other end of the shaft 36 has secured thereto a bevel gear 37 meshingl with a similar bevel gear 38 secured to the shaft 21. The head 31 is adjustable on the rod 33 as is also the guide on the base 20, provided for the punches 27 and 29. to allow different spacings between the eyelets attached to the body portion of the envelope and the eyelets attached to the flaps of the envelopes.

The base 20 also carries in suitable sup- Matane@ ports a punch 40 as shown in Fig. tor punching Washers from a ivasherstrip and carrying evelets` to the flap portion oit the envelope aitcr the closingY Stringa l ave been inserted in and retained by Said Washers. lleloiv the punch Llf) as Shown `in Fig.V L a perforating punch A#l2 is located, which punches connected by a head l having' in its rear face a vertical `duide 44 eng'aeed by a roller i5 carried bv the end ot the crank 4:6 Secured to a shaft e7 supported in a bearing` .i8 mounted on the baseQO, The other end of the shalt -l-7 has rigidl)7 secured thereto bevel gear t9 meshing' with a similar bevel gear 50 Secured to the -Shaft The bevel gears and cranks are so proportioned that one rotation of the shaft 2l moves allV ot' said punches from their outermost position through their complete c vcle el operation.

Vertical lQuideivaya 5l and are provided in line With the lpunches 27 and 40 to lead Washer strips 53 and 54 from supplyT reels and 56 respectively, mounted under the base 2() Ato the feeding rollers 57 and 58 carli'ied b v suitable braelzets above the base. A similar vertical guide-Way 59 is provided in line with the punch 28 for receiving ivaeher Strip from a reel identica-l With the freel 55 immediat-ely behind it and this iv'aeher Strip is engaged at its upper end h v feeding rollers (50. The feeding' rollers 57 and 60 are connected together for Simultaneous operation by a suitable shaft (34 and this shaft is extended to carry a` ratchet Wheel 5l engaged by a paw] 62 carried by a swinging arm 63 mounted on the shaft G4 carrying said ratchet Wheel7 said arm being'connected b v a. link (3:3V engaging and actuated by a cam 6G secured to the shaft 3G that each complete rotation of the Shaft 36 causesa single operation ot the linl: G5 and advances the feeding' rolls 57 and 60 somewhat more than the diameter ot the washers punched tromthe Washer strips so that the stripe aiter the Washers are punched therefrom shall have sullicient strength to feed the blank portion of the strips through the guideivavs referred to. A `Spring 67 serves to hold a roller 68 carried by the linkin engagement with the cam (56. The feeding rollers 58 are similarlv operated bv a cam 69 carried b v the Shaft 47. Knobs 70 and 7l are connected with the roller feedingV allaite to permit operation of the roll manually in Setting up the machine.

Eyelets are supplied to the punches 27 and 40 respectiveliv bv evelet guides 30 'and which are supplied from hoppere not elmn'nR as theyv are Well known in the art nd thefse hoppers have connected with them rods '73 and 7;. actuated bv came 75 and 76 respect-ivelv1 carried by and secured to the Shaft 2l, said rods operating in a Well known manner not shown, to yfacilitate def liver;I ci" eyelets from said hoppere to s i eyelel guides, The `ej-Jelet guidee are aleo "ided `dclivei mechanism ,s 77 and 79 from came 79 and =eljv` carried b v and Secured to the. sha'tt 2l, each of theee reds waving in a manner to he described to deliver one eyelet at a time to the rlower end ot the evelet guide in the path olf tl e correspondinpT punch` A*in anvil plate Sl is supported by the basse Qd with a clearance between it andthe dies cooperating;` .viththe punches 27 and QSL to receive the body portion ot'. the envelope Se `that the punch bv its operation engagea an evelet in the lguide 30 and carriee it with a waqher eut from the Washer strip Iin the guide i te the heden-lf the envelope through Which the evelet is forced by the punch against a setting die 82 `earried bv vthe :invit A clearr-ince is .left betiveen the anvil plate Sl and the dies cooperating` with the puncheey 40 and 4Q to receive the Hap of the envelope in extended relation and also to permit the etringy Feedingr devices to be moved adjacent and into the die cooperating with the punch 40 to feed the String, in a manner to be described. through an ap ture in the Waehcr Strip in the guide 52 at that time in line with the punch l0. The string Ymedina"devicesare carried by an arm 8? secured to a Sheft 81E carried h v the upper end et abraclret S5 mounted on the basic Q0 a nd to the other end of saidrsliatt. au a RG ia wcured. pivotallv connected teI a lil( 9?' xviii/hat ite loive" end carries la roller 99 resti on a cam 89. said `cam beinemounted upon and Secured to the Shaft 2l. The Shaft also carriee a camwhich is rigidlv secured thereto for actuating` a bar 91 which in turn operates the gripper provided 'For retainiiisgthe string-lfed through the Washer ai'ierturc in a manner to be deecrib d The @hait 2l also carries a cam 92 ich ie rigidl;7 se cured to Said Shaftg which operates a rock shaft connected in turn Lto la rod 94e. which after the arr-.i 83 ie in String feeding position, actuates the feeding; mechanism on the arm to teed kthe throuejh the washer aperture. The shaft Qt also carries a cani 95 which rieidl;y secured theretd to actuate the string' cuttine; i'iiech'anism 96 when the arm '83 is in ite retracted position. Y f

',lhevstring` feeding and handling' devices are shown more clearly7 in Figs. 3 to S and 13 and 14 to which reference `is now made. As shown in Fig'. 3 the arm 8? carries at its lower end and pivoted thereto a string;

ros

guide 97` the pivotirod 98 ot' which projecte I 100 in the die in line with the punch 40, engages a stop bar 101 carried by a plate 102 extending upwardly from the base 20; further movement of the arm 88 to bring it into engagement with its motion limiting stop 108, adjustably secured to the plate 102 as indicated` turns the guide 97 so that its nose is moved into the opening 100 and the gear 104, later described, is brought into mesh with the rack 105 mounted to slide in guides 106 carried by the plate 102. At the instant this relation is secured, the roller 88 engages a delay surface on the cam 89 and the rack 105 is actuated by the mechanism shown in Fig. This consists of a lever 107 pivotally supported on the plate 102 at 108, one end of which is pivotally connected at 109 with the rack 105 and the other end of which is connected with one end of a. link 94 the other end of which is pivotally connected with an arm 110 carried by the rock shaft 98, which carries a second arm 111 to which a roller 112 is secured resting upon the surface of the cam 92. A spring 118 is provided between the plate 102 and the link 94 to move the rack 105 to the left as shown in Fig. 5, when the cam 92 is in position to permit such motion. This occurs only during the interval that the arm 88 is 'held against its stop 108. In this manner the string is fed from the guide 97 through a washer aperture in line with th(` nose of said guide.

The detail construction of the spring guide is more clearly shown in Figs. 18 and 14 in which the guide 97 is shown mounted on and rigidly secured to the rod 98 pivoted in the forked lower end of the arm 88. The guide consists of two parts 978L and 97b pivoted together by means of a rod 114 and said parts carry respectively shafts or rods 115 and 116` to which are secured in the recess formed therefor in said parts, feeding rollers 11,7 and 118 respectively. Said rods extend above the parts of the string guide and have secured to their upper ends gears 104 and 10421 respectively which mesh with each other, the gear 104 being the one brought into mesh with the rack 105 by the operation above described. The part 97b is provided with a guiding passageway 119 for directing the string to the feeding rollers 117 and 118 which, as indicated in Fig. 18 are preferably grooved slightly and roughened or knurled to firmly engage the string. A spring 120 holds the outer ends of the parts 97:l and 97b together so that the feeding rollers nearly or quite engage each other and when the. string is to be inserted between the feeding rollers, the rollers may be separated slightly by pressure on the part 97b opposite the spring 120, which spring also provides an engagement between the feeding rollers and the string permitting irregularities in the string to pass through the feeding rollers without jamming the string or interfering with the operation of the devices employed to rotate the feeding rollers. A delivery passage 121 extends from the feeding rollers through the part 97a to the nose of the string` guide which as indicated is preferably tapered and pointed to clear the edge of the opening 100 shown in Fig. 8. A clearance 100a isv preferably cut in the edge of the opening 1.00 to more readily permit the nose of the string guide to enter the opening 100,

As shown in Fig. 8. the lower end of the rod 87 carries a forked guide 87 which passes around the shaft 21 to maintain the rod and roller 88 carried thereby in proper relation to the cam 89. The rod shown in Fig. 2 for operating the feeding rollers 57 and 60, and the similar rod employed for operating the feeding rollers 58 are U preferably similarly constructed to engage the shafts 86 and 47 respectively to hold the rollers carried by said rods in proper engagement with the cams 66 and 69 respec tively. As shown in Fig. 8, a spring 122 is provided between the base 20 and the upper end of the rod 87 to hold the roller 88 in engagement with the surface of the cam 89, said spring serving to move the arm 88 into its string feeding position when the position of the cam 89 permits said motion, motion in the opposite direction of the arm beingeffected positively by the cam 89. As also shown in Fig. 8, a sprin T 128 is providedV l-eiween a lug carried by the arm 99 and the arm 88 to hold the guide 97 substantially parallel with the plate 102 when the arm 99 is not in engagement with the stop 101. The string preferably extends from the passageway 119 shown in Figs. 18 and 14 upwardly along the arm 88, to which, if desired, it may loosely be held b v any suitable guides and from which it extends to a supply spool or roll not shown.

After the string has been fed through a washer aperture in the guide 52 by the devices above described the projecting end of the string is engaged by the gripper construction shown in Fig. 4. This consists of a pair of jaws 124 and 1.25 pivotally supported on a stud 126 projecting from the plate 102, so that in their open position they clear the openings and 127 in line with the punches 40 and 42. The aws are in the form of bell crank levers having arms projecting above and below the stud 126` the ends of said arms being connected by links 128 and 129 with the end of the operating rod 91 mounted to Slide horizontally in :i suitable guide 180. Springs 181 and 182 are connected between said links and said guide to move the rod 91 outwardly and the jaws 124 and 125 together, when the surface of the operating cam permits this motion. It will .be understood .that the action of the .Lemoeb jews 121i and. 125 must Jbe accurately .timed yand that their gripping action is but .momentary; to Asecure this l preferably cond struct the cum in two parts. 90a and 90b secured .together by screws 90C extending through slots in one ofthe parts ofthe com 90. is indicated in F 7 onevot theparts, as. forexamplepsrt QODot the cam,.is 'provided With a hub 90d by which the cam `may be secured by :i suitable set: screw in desired .position on the shaft. 21 Iand the other part SOotthe com receives its support iromsaid `hub 90d. .One oi the operating feces .of the cam .is `pret'eiubly csrriet by each...o.the parts thereof as a. result of Whichthe exact nitervul 'ot operation ot the gripping devices muy be determined to anicety and the is begun toivzirdsthe envelope and the .sev-y erul Washer strips yare fed. by their cem .actuating mechanism described shove, to bring the periorations formed in said strips by the `preceding operation, in line with` the axes of the punches that punch the Washers from the strips. .At the saine time, the erin 88 is advanced trom its position oi rest, indicated by the dotted lines in Fin'. 3, to the position indicated in Fig. 9 in which position the arm S15) has engaged the stop 101 und turned the string?` guide 97 so tuut its nose enters the aperture 100-e-te1iding through the plate 10?. und the die 133 cooiierating with the punch 4-0. it this time it will be understood the Washer strip in the guideway 52 but for the sulre ot clezirness, the strip is omitted from Fig. 9 us ure the other Washer strips employed. By the operation otzthe rod 78 :in evelet has been delivered to the lower ci i or the eyelet guide 172, in line with the axis ot the punch 40 in. :i manner to be described, in reudiness to be removed from the eyelet guide and carried by the punch #$41 into the .uid perforation in the Washer; trip iu'iniediutely before the Washer ,is punched from the strip, but before the punch ffl hes been :rdvanced sutciently to do this, the string is ted through the perforation in the u'ushei strip by operation of the rack 105 `es above described. immediately upon the sti' 2* being 'ted through the perforation in the wusher strip find through the Well ot the ,euideu'sy the or.' s 124 and 125 are brought together :ings connectis ne `opened .and the punch `thereby `eyelet '195 in the-guideivay 72..and moveit .firmly into the ,perforation in lthe Washer .ment of the arm 83 ved with themin vthe .niannerabove described,

'to securely engage the ,end .of .the string .134.

immediately upon this-occurring, the arm y83 moves .quickly sway from .the position lindicated inF'-^-.f 9,. suiiiciently to .permit the stringi guide 9"? to moveinto .aplane parallel .Withthe .plete .102,and so that the nose .of the string guide is in a position :just back ,of .the path ottthe. punch 40. In :this position fthe arm S3 .fis held momentarily :by .a

dehif4 :surface on its actuating cam, thegripping jews 1.1.24 and 125 are immediately e() and .parts carried advance to engage vthe lovvermost `strip immediately before `the punch 1410 punches the misher vfrom the strip. The perforation inthe washer stripis .a closeiit Jjor the eyelet us u resultor" which the..-string is jammed betvveenthe eyeletzand the `edge or' v the Vpertoretion and held securely enough to insure itV being retained against the action of drawing the lstring through the. guidel97 and Whatever .other stringrguides are em ployed, us the arm 83 .is moved away from its string` feeding position. Immediately upon the string beingengoged in the Washer strip sk described, a 'further backward vmovebegins and the punch 40 continues its forward movement after punching the Washer from the strip and moves the Washer und ,the attachedeyelet .und string toivardsthe @Hap ofi the `envelope not shown, While at the Sametime the punch is advanced vto .punch the Washer/from the `strip 53 in the guideway 59, said Washer being :held on the end of said punch bythe center rounded project-ion 28a used subsequently to receive the end of the eyelet 135 to set the suine atterrit has been forced through the envelope when the punches. 28 and Li() have been brought irmly-togetherfin the space betweenthe plate 102 und the anvil plate 81. The setting operation referred to forces the eyelet through the Wushercarried bythe punch 28 and thus securely holds the tivo Wassers on either side of the flap of the envelope with the string securely clamped between the eyelet and Washer on the outer surface of the flap and the end of the string projecting slightly beyond the eyelet on the outer surface of thewasher, the main portion of the string` extending from the eyelet `between the Washer and the outer surface of the flap ot' theenvelope.

During the settingof the eyelet inthe manner above described, the punch 27 has been advanced so that its punch rod 27a has removed un eyelet from the eyelet guideway .530 in? the same manner described above for the eyelet 135 and continued motion of the punchQ? `has forced the eyelet through a Washer perforation in the Washer stripcon- `tzt-.ined in the guideway 51 and immediately .iso

justbeyond the string cutting mechanism 96 and this is immediately operated as will best be understood byret'erence to Figs. 6 and 8. rEhe string cutting devices 96 as shown inFigs. 6 and S consist ot the vguide 136 mounted in inclined position on the base to supporta sliding bar 137 from which a stud 13S projects outwardly to torni the pivotal support for two shear blades 139,

139 in the form of bell crank levers which are pivotally connected hy links 140, 140 with a tired stud 141 extending 'from the guide 136. The bar 13T is provided with a laterally extending lug` 142 adjacent the sur- Jface ot the cam 97 to be engaged by an operating lug $.17 projecting trom the outer surface ot' the cam. A spring 143 has its ends connected to the studs 138 and 141 and tends to hold the bar 13T in its lowermost position in the guide 136. for which position the shear blades 139 occupy the position indicated in Fig. 8. The slide 137 is prevented trom moving beyond the position indicated in Fig. 6 by an enlarged head 144 carried on the upper end of the slide, which engages the upper end oiE the guide 136 for the lowermost position ot the sliding bar. trom which head the lug projects. A spring 145 is mounted ou the stud 136 and presses against the outermost shear blade 139 to hold the shear blades together with sutlicient pressure to insure a positive cutting ot the string. Immediatelj.Y upon the arm 83 reaching its eXtreme rear position for which the nose of the string guide is just back of the shear blades, the lug 9T engages the lug 142 and the slide 137 is raised bringing the shear blades together and since the string extending from the string guide to the envelope lies between the shear blades when they are raised, it .is severed when they are brought together. The operation ot the shear blades occurs at substantially the same time that the envelope is released by backward movement ot the several punches and the envelope may therefore be removed trom the machine as soon as it is released bythe punches. VThe interval required 'tor the operation of the shear blades is briet and is terminated as soon as the lug 9T passes under the lug 142 on account ot the increasing distance betwen the lugs as the cam 97 rotates and when said 1us are disengaged the spring 143 immediately moves the shear blades to their open position shown in Fig. 8. All ot the parts are placed iu readiness or a repetition ot the operation described, as soon as the punches reach their retracted position at which time the clutch mechanism 23 engages the shaft :21 and prevents rotation ot the sha't't until the clutch mechanism is again released.

It will be noted as indicated in Figs. 2 and 9 that the die plate 82 is mounted in a clearance opening in the anvil plate 81 which permits movement of the die plate towards or away tro-m the punch 28 as required to secure ditterent distances between the eyelets in the tlap and in the body portions o't the envelope, the punches Q7 and 29 being similarly adjustable on the base 2O as above described.

To insure proper operation of the punch to eii'eet the various operations described 1 prefer to construct the punch as shown in Figs. 11 and 12. The punch as shown in these figures, is in the form ot a tube throughout the greater portion of its length. which tube contains a rod 40 ot' smaller diameter than the bore ot' the tubular p0rtion and which extends thro'ugh the working end of the punch with a sliding tit` its diameter being such that it is also a sliding tit in the eyelets used in the machine. The rod 40 is secured at its inner end to a plunger 146 which is a sliding fit in the bore of the tubular portion ot' the punch 40 and 'from the other end of which a second rod 40h, similar to the rod 40, extends through a screw plug 40c screwed into the outer end of the punch 40, said rod 4Gb having at its outer end an enlarged head 40d to engage a bumper 40e when the plunger 146 is released. The head 40d also provides for setting the plunger in its operating position in the punch 40, it' desired in connection with setting up the machine. A spring 147 is contained in the punch 40 around the rod 40b between the plunger 146 and the plug 40c to move the rod 40a quickly through the eyelet to be operated upon, when the plunger 146 is released. latch 148 is pivotally connected at 149 to the tubular portion of the punch 4() so that in the position it naturally assumes b v gravity it engages the end ot the plunger 146 to hold it in a position compressing the spring 147. The latch is provided with a projecting pin 150 at its free end for engaging a cam 151 after the punch has been advanced somewhat on its forward stroke, the cam serving to lift the latch and disengage the plunger 146 at which time the spring 147 forces the rod 40'qu quickly through the eyelet in line therewith and also through the perforation in the washer strip after the string has been fed therethrough in the manner described. lVhen the punches have been advanced to set the eyelet, the spring 147 is compressed by the engagement between the outer end of the, rod a. and the punch 28 for which condition the latch 148 drops into the path of the plunger 14:6 to hold it in a position compressingthe spring 147. The cam 1514 as indicated in Fig. 1Q is provided with an inclined lateral surface 151a and the cam is supported in the path of the pin 150 by a flexible leaf spring`152 permitting lateral movement of the cani when the pin 150 engages the inclined surface 151@L and this permits the punch 0 to move to its rear orretracted position although the pin 150 is in the path ofthelcam 151.' The cam 151 is preferably secured to the base 20 in a manner as, indicatedat 153 permitting adpunch to effect the release of the plunger 1&6 at the precise moment desired, The relation of the punch 42 to the punch 40 is also shown in Fig. 11 and it will benoted thatthe end of the saidpunch is ofreduced diameter to perforate the washer strip in.

the guide-way 52 below the positionv of punchinglthe Washer itself from the strip, the; amount of motion imparted to the strip as described above being equal to thev distance between the of the punches 42 and el() for each cycle of operation of the punches.,

rlhe punch 27, as shown in Figs. 1 and 10, is also provided with a spring actuated plungerA rod 27, similar to the rod 40.a de-r scribed for the punch 40, but in this case no accurate timing of the plunger rod is reqi'iiredsince the purpose of the rod 27a is to engage the lowermost eyelet in the eyelet guide 30 and carry it through the Washer perforation in the strip in the guideWay 51 and to retain the eyelet and Washer' after itlis punched, in proper position on the end of the punch 27 until the eyelet is moved into engagement with the die plate S2, at which time the plunger rod 247"L permit the punch 27 to firmly the eyelet against the die plate.

The devices employed for controlling the eyclet feed are shown in detail in Fig. 15

forr the guideivay 72, it ,being understood that the guideway 30 is of similar construction and provided with similar feeding devices. rIl he bar slot in the guidexvay 72 and is provided with projecting lugs 78"i and 78 projecting from thevv upper and lower edges of the bar 78 in staggered relation so that motion of the bar 78 in one direction brings the upper` lug 78 in engagement with an eyelet inthe guideivay and motion in the reverse direction releases the eyelet and permits it to. drop upon the lug 78b for which condition the eyelets in the upper part of the guide- Way move downwardV an amount. equal to.

the .diameter of one eyelet. The lugs 78 uistment of the cam longitudinally7 of the` yields tol press and set.

78 is extended, beyond the,

doors being held in eyelet receiving position bv sirines 158 and 159 res ectivel i The y l e eyelet supported by the doors 15- and is in line with the axis of the punch t0 and the doors are of a size to be pushed aside by the punch as it passes the loiver end of the guideivay after the rod 40 has engaged the eyelet supported by the doors to hold it in position to be moved through the washer by the punch O in the manner` above described.

From the above description it will be noted that no tension or. stress is placed upon the string in placing it in position to be engaged by the eyelet and retaining Washer and that the only strain exerted on the string at any time is that required to move it through the various guiding devices and from the reel or. spool. On the other hand the string is positively fed to correct position to be engaged and clamped by the washer7 before any clamping action is exerted upon the string after which the string is engaged and secured between the eyelet and the edge of a washer perforation in the Washer strip before the Washer is formed, after which the string is securely clamped between the Washer and the outer face of the flap of the envelope by the setting of the eyelet. As a result of securing the string in this manner, the st ringextends outwards radially ofthe washer on both sides thereof and is held so securely by the clamping action that it cannot be pulled out without tearing the washer.

lVhile I have shown my invention in the particular embodiment above described, it will be understood that Ido not, limit myself to this exact construction but that I may employ equivalents` known to the art at the time of the filing of thisapplication Without departing from they scope of the appended claims.

That I claim is:

1. String feeding mechanism for machines for securing washers and strings to envelopes having meansfor supporting lan envelope and a perforated Washer blanlr at a distance from each other as a partof such machine7 consisting of mechanism movable between and away from the spaced envelope and Washer blanr tofeed a string through the. perforation in a Washer blank.

2. String feeding mechanism for machines for securing Washers and strings to envelopes having means for supporting an envelope and a perforated washer blank at a distance from each other as a part of such machine, consisting of mechanism movable between and away from the spaced envelope and washer blank to feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion, and string feeding devices carried by the delivery portion of said member.

String feeding mechanism for machines for securing washers and strings to envolopes having means for supportn rj an envelope and a perforated washer blank at a distance from each other as a part of sucn machine, consisting of mechanism movable between and away from the spaced envelope and washer blank to feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion, and feeding rollers carried by the delivery portion of said member.

l. String feeding mechanism for machines for securing washers and strings to envelopes having means for supporting an envelope and a perforated washer blank at a distance from cach othe as a part of such machine, consisiing of mechanism movable between and away from the spaced envelope and washer blank to feed a stri/ng through the perforation in a washer blank, said mechanism comprising a member having cyclic motion, feeding rollers carried by the delivery portion of said member, gears cured to said rollers, and a movable rack for operating said gears.

String feeding mechanism for machines for securing washers and strings to envelopes having means for supporting an envelope and a perforated washer blank at a distance from each other as a part of such machine consisting of mechanism movable between and away from the spaced envelope and washer blank to feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion, feeding rollers carried by the delivery portion of said member, gears secured to said rollers, a movable rack for operating said gears. a cani, and operating connections between said cani and rack.

(i. String 'feeding mechanism for machines for securing washers and strings to envelopes having means for supporting an ei'ivelepe and a perforated washer blank at a distance from each other as a part of such machine, consisting of mechanism movable between and awav from the spaced envelope and washer blank io feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion in a lirst direction. a string deliveringl device carried by said member and movable relatively thereto to present the end of the string to the perforation in a washer blank, and feeding devices carried by said delivering device.

T. String feeding mechanism for machines for securing washers and strings 'to envelopes ha 'ing means for supporting an rnvelope and a perforated washer blank :it a distance from each other as a parly of such machine, consisting of mechanism movable between and away from the spaced envelope and washer blank to feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion in a first direction, a string delivering device carried by said member and movable relatively thereto to present the end of the str'ng to the perforation in a washer blank, and feeding rollers carried by said delivering device.

8. String feeding mechanism for machines for securing washers and strings to envelopes having means for supporting an envelope and a perforated washer blank at a distance from each other as a part of such machine, consisting of mechanism movablel between and away from the spaced envelope and washer blank to feed a string through the perforationin a washer blank, said mechanism comprising a member having cyclic motion in a lirst direction, a string delivering device carried by said member and movable relatively thereto to present the end of the string to the perforation in a washer blank, feeding rollers carried by said delivering device, gears secured to said rollers, and a movable rack for operating said gears.

9. String feeding mechanism for machines for securing washers and strings to envelopes having means for supporting an envelope and a perforated washer blank at a distance from each other as a part of such machine, consisting of mechanism movable between and away from the spaced envelope and washer blank to feed a string through the perforation in a washer blank, said mechanism comprising a member having cyclic motion in a first direction, a string delivering device carried by said member and'movable relatively thereto to present the end of the string to the perforation in a washer blank, feeding rollers carried by said delivering device, gears secured to said rollers, a movable rack for operating said gears, a cam, and operating connections between said cam and rack, movement of said delivering device relatively to said member moving one of said gears into or from the path of said rack.

l0. String feeding mechanism for machines for securing eyelets, perforated washers and strings to envelopes, comprising a string carrying member having cyclic motion, and feeding rollers for feeding a string relatively to said member through a Il i) Washer perforation independently ofl and'beeyelets, Washers or envelopes.

11. String feeding mechanism` for machines for securing eyelets,` perforated Washers and strings to envelopes, comprising a stri carrying member having cyclic motion, feeding rollers for feeding a string relatively to said member through a Washer perforation independently of and before connection of said string to any of said eyelets, Washers or envelopes, gears secured to said, rollers, and a movable rack for operating said gears.

l2. String feeding mechanism for machines for securing eyelets, perforated washers and strings to envelopes, comprising a string carrying member having cyclic motion, feeding rollers for' feeding a string relatively to said member through a Washer perforation independently of, and before connection of said string to any of saidv eyelets, Washers or envelopes, gears secured to said rollers, a movable rack for operating f* said gears, a cam, and operating connections between said cam and rack.

13. String feeding mechanism for inachines for securingeyelets, perforated washers and strings to envelopes, comprising a string carrying member' having cyclic motion in a first direction, a string delivering device carried by saidA member and movable relatively thereto to present the end of the string to the perforationin a Washer, and feeding devices for feeding a string relatively to said string delivering device through a Washer perforation independently of and before connection of said string to any of saidv eyelets, Washers or envelopes.

ll. String feeding mechanismk for` machines for securing eyelets, perforated washers and strings to envelopes, comprising a string carrying member having cyclic motion in a first direction, a string delivering device carried by said member' and movable relatively thereto to present the end of the string to the perforation inv a Washer, and feeding' rollers for feeding a string relatively to said string delivering device through a Washer perforation independently of and before connection of said string to any of said eyelets, Washers or envelopes.

l5. String feeding mechanism for machines for securing eyelets, perforated washers and'r strings to envelopes, comprising a string carrying member having cyclic motion in a first direction, a string delivering device carried by said member and movable relatively thereto topresent the end of the string` to the perforation in a Washer, feeding rollers for feeding a string relatively to said string delivering device through a Washer perforation independently of and before connection of said string to any of said eyelets, Washers or envelopes,

gears secured to said rollers,` andA ai movable raclr for operating said gears.

1G. String feeding mechanism for ma'- chines for securing eyelets, perforated washers and strings to envelopes, comprising a string carrying member havingcyclic me on in a first direction, a string deliverin device carried by said4 member' and movable relatively thereto to present the end of the string to the yperforation in a Washer, feeding rollers for feeding a string relatively to said string deliveringk device 'through a vif'asher perforation independently of and before connection of said string to of said eyelets, Washers or envelopes, gears secinfed to said rollers, a movable ra ir for operating said gears, a cam, and operating connections between said cam and rack, movement of said delivering device relatif to said member moving one ofY said gears into or from the path of said rack.

lfString feeding nechanism for inarhines for securing eyelets, perforated washers and strings to. envelopes,fcomprisan oscillatory arm, and string feeding devices ca ried by saidy arm for moving a string relatively to said arm.

i8. String feeding mechanism for ma.- chines for securing eyelets, perforated Washers and strings to envelopes, comprisingk an oscillatory arm,r string feeding. rollers carried by said arm, and' devices for' rotating said rollers;

19. String feeding mechanism for machines for securing eyelets, perforatedavashers and stringsL to envelopes, comprising an oscillatory arm, a string delivering device carried by said arm and movable relatively thereto, and string feeding devices carried" by said delivering device.

String feeding mechanism for machines for securing eyelets, perforated wasliers and strings to envelopes, comprising an. oscillatory arm, a string delivering` device carried by said arm. and. movable relatively thereto, feeding rollers carriedby sa' L device, and means for operatingsaid rollers.

2l. String feeding mechanism for machines for securing eyelets, perforated Washers and strings to envelopes, comprising an oscillatory arm, a string delivering device carried by said arm and movable relatively thereto, feeding rollers carried by said device, gears secured to saidrollers, ajrack for operating saidv gears, a cam, and operating` connections between saidv cam and rack.

22. String feeding mechanism for inachinesrfor securing eyelets, perforated washers and strings to envelopes, comprising a member having cyclic mot-ion., a string delivering device carried by said member and movable relatively thereto` to present the end of a string to the perforation in Washer, feeding yrollers carried by said dellO livering device, and a gripper for holding the string end projecting through the washer perforation to permit movement of said string feeding mechanism from its feeding position.

23. String feeding mechanism for machines for securing eyelets, perforated washers and strings to envelopes, comprising 'string feeding mechanism for feeding a string end through a washer perforation, a gripper for holding the string end projecting through the washer perforation to permit movement of said string feeding mechanism from its feeding position, and shearing mechanism for cutting the string adjacent to string feeding mechanism.

24. In a machine of the class described, string feeding mechanism comprising a member having cyclic motion, and feeding rollers adjacent and carried by its delivery end for feeding a string.

25. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said string feeding mechanism comprising a member having cyclic motion, feeding rollers adjacent and carried by its delivery end for feeding a string, gears secured to said rollers, and a movable rack for operating said gears.

26. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said string feeding mechanism comprising a member having cyclic motion, feeding rollers adjacent and carried by its delivery end for feeding a string, gears secured to said rollers, a movable rack for operating said gears, a cam, and operating connections between said cam and rack.

27. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said string feeding mechanism comprising a member having cyclic motion, a string delivering device carried by said member and movable relatively thereto to present the end of the string to a perforation in a washer, and feeding devices carried by said delivering device.

28. In a machine of the class described, string feeding mechanism for 'feeding a string through a washer perforation, said string feeding mechanism comprising a member having cyclic motion, a string delivering device carried by said member and movable relatively thereto to present the end of the string to a perforation in a washer, and feeding rollers carried by said delivering device.

29. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said string feeding mechanism comprising` a member having cyclic motion, a string delivering device carried by said member and movable relatively thereto to present the end of the string to a perforation in a washer, feeding rollers carried by said delivering` device, gears secured to said rollers, and a movable rack for operating said gears,

30. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said. string feeding mechanism comprising a member having cyclic motion, a string delivering device carried by said member movable relatively thereto to present the end of the string to a perforation in a washer, feeding rollers carried by said delivering device, gears secured to said rollers, a movable rack for operating said gears, al cani, and operating connections between said cam and rack, movement of said delivering device relatively to said member moving one of said gears into or from the path of said rack.

3l. In a machine of the class described, string feeding` mechanism for feeding a string through a washer perforation, said string feeding mechanism comprising an oscillatory arm, and string feeding devices carried by the delivery end of said arm.

32. In a machine of the class described, string feeding mechanism for feeding a string through a washer perforation, said string `feeding mechanism comprising an oscillatory arm, and string feeding rollers carried by the delivery end of said arm.

In a machine of the class described, the combination of string feeding mechanism for feeding a string end through a washer perforation, and a gripper for holding the string end projecting through the washer perforation to permit movement of said string feeding mechanism from its feeding position.

Si. In a machine of the class described, the combination of string feeding mechanism for feeding a. string end through a washer perforation, and a gripper for holding the string end projecting through the washer perforation to permit movement of said string feeding mechanism from its feeding position, said gripper comprising two jaws pivotally supported, and springs tending to move said jaws together.

35. In a machine of the class described, the combination of string feeding mechanism for feeding a string end through a washer perforation. and a gripper for holding the string end projecting through the washer perforation to permit movement of said string feeding mechanism from its feeding position, said gripper comprising two jaws pivotally supported, and springs tending` to move said jaws together, a cam. and connections between said cam and said jaws releasing said jaws after said string is fed through the washer perforation and and f opening said j :nvs when the string feeding mechanism is moved backward away from the washer.

36. In a machine of the class described, the combination of string feeding mechanism for feeding a string through a` Washer perforation, a gripper for holding the string projecting through a Washer perforation to permit movement of said string feeding mechanism from its feeding position, and shearing mechanism for cutting the string adjacent the string feeding mechanism, said shearing mechanism comprising shear blades, a slide carrying said blades, a iiXed support, connections extending from said blades to said fixed support for operating said blades by movement of said slide, a spring tending to hold said slide in position opening said blades, and a cam having a. lug extending into the path of said slide to operate said slide and blades.

37. In a machine of the class described, the combination of string feeding mechanisin movable between and away from a perforated Washer and envelope to feed a string through a Washer perforation, a grip-per for holding the end of said string during motion of said string feeding mechanism away from its feeding position, and shearing mechanism for cutting the string adjacent the string feeding mechanism in its retracted position, said shearing mechanism con'iprising shear blades, a slide carrying said blades, a fixed support, connections extending from said blades to said fixed support `for operating said blades by movement of said slide, a spring tending to hold said slide in position opening said blades, and a cam having a lug extending into the path of said slide to operate said slide and blades.

In Witness whereof, I hereunto subscribe my name this 28th day of February, A. D. 1922.

STANLEY B. URBANOVITZ. 

